I read up a bit on them yesterday (just a small bit).... one review made a comment that though the picture might have been fine, it took a 2-3 second delay to get it to your phone for viewing.
(Note that I take ALL review, good and bad, with a grain of salt without more substantiation of the comments)
Anyway, I hadn't thought of that angle.
For me, a USB to the PC simply won't be a good idea. PC is inside in my office and my needs for a scope would be outdoors, garage, under hood of car, behind walls...
I guess I'm initially attracted to those with the hand held viewer (camera attached) Maybe that's because that's all I've been exposed to via Autozone. Having one send a signal to my phone is also very interesting..... UNLESS there's a lag.
I'm one of those researching OCD type.... drives me nuts at times. ALWAYS drives my wife nuts.
Trying to avoid that predisposition.